Door-operating mechanism



Jul 6,1926.

cQR. MARTINEAU DOOR OPERATING MECHANISM Filed May 15, 1925 2 Sheets-Sheet 1 Inventor July 6 1926. 1,591,636

' c. RQMARTINEAU upon OPERATING MECHANISM {Filed May '15, 1925 z sheets -sheet 2 g 5 \I- 10 I x 12 S 4 a 15 FLE'E 3 g 1 L'- F g.4

FIB-E Inventor r Patented July 6, 1926.

UNITED STATES CLARENCE R. MARTINEA'U, OF ALBANY, NEV YORK.

DOOR-OPERATING" MECHANISM.

Application filed. May 15, 1925. Serial No. 30,561.

Reference may be had to the accompanying drawings, and the reference characters marked thereon, which form apart of this specification. Similar characters refer to 6 similar parts in the several figures therein.

In the use of sliding doors or rolling doors it often is found difiicult to fully close the door or to start the opening movement of the door due to the sticking or binding of the door in its slideways. I

Such trouble is common in the operation of the doors of freight cars.

The principal object of the present invention is to provide means by which a leverage force can be applied to such a door, particularly for opening the door; and if desired, for fully closing the door.

Other objects will appear in connection with the following description.

F ig. 1 of the drawings is a view in front elevation of neighboring broken-away portions of a sliding car-door, and door-casing formed by the body of the car, showing my improved door-operating mechanism with the door fully closed.

Fig. 2 is a similar view with the door partly opened as by the use of my improved operating mechanism.

Fig. 3 is a vertical section of the same taken on the broken line 33 in Fig. 1.

Fig. 4 is a similar section taken on the broken line H in Fig. 2.

. Fig. 5 is a view in front elevation showing the housing for the cam-mechanism partly broken away.

Fig. 6 is avertical section of the same taken on the broken line 6-6 in Fig. 2.

Referring to the drawings wherein the invention is shown in preferred form, 1 is a car door body forming a door-casing, 2, for a door opening adapted to be closed by a door, 3, movable along slideways, 4, on the car body across said door opening.

In carrying out my invention, I mount upon the door-casing, 2, a housing, 5, through which extends a shaft, 6, rotatory and longitudinally movable in bearings formed by the housing.

Fixed upon the shaft, 6, is a lug, 7, which engages a spiral groove, 8, on the interior of the housing, 5, whereby rotative' movements of the shaft .in opposite directions will cause the shaft to reciprocate longitudinally through the housing.

The lug, 7, and groove, 8, form cam mech anism for longitudinally reciprocatingthe shaft, 6, with more or less power in accordance with the pitch of the spiral on which the groove is formed.

Locking movements can be imparted to the shaft, 6, by means of a'handle, 9,.which may be of any desired length in accordance with the force with which it is desired to operate the shaft, 6.

The shaft, 6, is formed witha head, 10, on its end neighboring the door opening, and an abutment, 11, is fixed upon the outer side of the door, which abutment when the door is fullyclosed, is in the path of the head, 10, when the shaft, 6, is moved longitudinaly, toward the door opening.

lVhen it is found difficult to start the opening movement of the door, the shaft, 6, is rotated by means of the handle, 9, in a direction to force the head, 10, of the shaft against the abutment, 11, and to thus drive back the door to expose more or less of the door opening after which the door can be fully opened in the usual manner.

In closing the door if it should stick or bind when nearly closed, the shaft, 6, can be rotated to force the head, 10, adjacent to the abutment, 11, and in a position to be engaged by a hook, 12, fixed upon a shaft, 13, rotatory in a bearing, 14, on the outer side of the door after which engagement the shaft, 6, can be rotatively moved by means of the handle, 9, in a direction to withdraw the shaft, 6, from the abutment, 11, and by engagement of the head, 10, with the hook, 12, drawing the door into closed position.

In Fig. 2 the device is shown in position for thus closing the door.

The cam mechanism may be of any desired form whereby suflicient leverage can be obtained to force its closed position.

I prefer to use cam mechanism in the form of the worm or screw type such as the lug and spiral groove shown as the same is simple in construction and efficient to move the shaft longitudinally in opposite directions.

I do not wish to be limited to the constructions shown and above described, as, for certain purposes of the invention, various changes may be made in the form and an the door to andfrom' rangen'ient of various parts of the device of the door-opening; a shaft pa allel with said door roekably andlongitudinally movable in hearings in said housing, said shaft having a lugengageable with acam groove with which saidhousing is provided; means for rocking said shaft and :to thereby move the same longitudinally toward and from said opening, said door having an abutment in the endwise path of saidshaft when said shaft ismoved toward said openingwith the door in position ,to close saidopeni-ng.

" 2. In door-operating meehanism, the combinationwith a casing bordering a dooropening; of-adoor slidableacross said opening a housing on saidcasing atone end of the dooropening; ,a shaft parallel with said door rockably and longitudinally movable in bearings in said housing, said shaft having a head on the end adjacent said doorway, and also having a lug engageablewith a oam groove with whiohsaid housing is provided;

menses means for rocking said shaft and to thereby move the same longitudinally toward and from said opening, said door having an abutment in the path of said shaft when the door is in position to close said opening, and also having means adapted to be engaged by said head when the shaft is moved away from saidopening with the door in partly open position.

3. Indoor-operating mechanism, the combination with a casing bordering a doorolosed opening; ,of a housing mounted on said casing; a shaft rook-ably mounted in bearings in said housing and movable toward and from said opening; means for rocking said shaft; cam mechanism whereby said shaft is reeiprocated longitudinally by rocking movements thereof, said shaft having a shoulder; a door having an abutment in the path of said shaft when the shaft is moved toward said opening with the door in position to close the opening; and a'hook mountedupon said doormovable intoand out. of the pathof ,return movement of said shoulder when the door is in partlyopen position.

In testimony whereof, lhave hereunto set my hand this 8th day of May, 1925.

CLARENCE R. ARTINEA 

